on behalf of代表……一方;作为……的代言人
Mr Knight cannot be here,so his wife will accept the prize on behalf of him.
奈特先生不能来,因此由他夫人代他领奖。
random adj.胡乱的;任意的;随意;任意
at random随意地
He took a book at random from the shelf.
他从书架上随便拿了一本书。
【写作素材】
1.随着工业的发展,产生了越来越多的温室气体,地球正在变暖。
2.有些科学家同意全球变暖是个灾难。
3.不断增长的温度可能会导致洪水、干旱和饥饿。
4.全球变暖已经对人类和动物构成严峻的挑战,因此,到了我们采取措施应对这一挑战的时候了。
5.只有通过改变我们粗暴对待环境的方式,我们才能和环境和谐相处。
提示:黑体部分用本单元词汇表达。
【连句成篇】
With the development of industry,more and more greenhouse gases are produced and the earth is becoming warmer.Some scientists subscribe to the view that global warming will be a catastrophe.The steady going up of the temperature may result in floods,drought and famines.Global warming has become a serious challenge to mankind and animals,so it is high time that we took measures to deal with it.Only by changing the way we treat the environment roughly can we get along well with it.
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